I completed updrilling the aft skins today, not everything can be updrilled, for example the holes where the root double goes have to remain at #40 until I fit the doubler. Also the holes that go through the main spar remain at #40 at this time until I fit the fwd skin. When all holes were updrilled the wing was put flat on the saw horses in order to be able to commence the next phase, installing the fwd skin.
